Thermally-controlled container.



H. S. MAcKAYE. THERMALLY CONTROLLED CONTAINER.

APPLICATION FILED APR.29. 19M.

Patented "Oct. 24,1916.

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HAROLD S. MACKAYE, OF YON'KERS, NEW YORK.

THERMALLY-CONTROLLED CONTAINER.

Specification of Letterslatent.

Patented Oct. 24, 1916.

' Application filed Apri1 29,1914.' Serial No. 835,124.

To all whom it may concern:

, Be it known that I, HAROLD S. MAOKAYE, a citizen of the United States, residing at Yonkers, in the county of Westchester and State of New York, have invented certain new and useful Improvements in Thermally- Controlled Containers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to an inexpensive and effective toy made preferably in the form of a self-hatching egg, capable of repeated performance of the hatching process. This toy makes an effective table favor or Easter novelty. It is to be understood that the egg shape 1s not an essential feature of the invention.

Figure 1 of the accompanying drawings is a vertical sectional view of one form of the device, Fig. 2 is a top view of the form shown in Fig. 1, Fig. 3 is a sectional detail view of the catch, Fig. 4 is a perspective View of the sensitive bar as used in Figs. 1, 2 and 3, Fig. 5 is a sectional view of a modified form, having an internal bar, Fig. 6 is a perspective view of a substitute sensitive element, Fig. 7 is a sectional view of another modified form of egg-shaped box and Fig. is an elevation of the box shown in Fi The operation of my device depends upon the action of a sensitive strip which, when heated or cooled, as the case may be, bends so as to cause the opening or hatching of the egg.

Figure 1 shows a toy composed of an eggshaped box in twolparts 32 and 33, with a spring jumping jack 34: within it, which tends to throw open the lid. A bent spring locking bar 35 has beveled tips 36 which normally hold the lid inplace by the ridges 37,. Or they may enter a groove in the lid, as shown in Fig. 3. This bar is the sensitive element, and in the form shown in Fig. 1 is made of two strips of different expansion .coefiicients, as shown in Figs. 3 and 4. When such a structure is heated (as by placing in an oven or in a cup containing hot water) the spring bar opens and the lid is forced By reversing the component strips of the bar, in a well known manner, the same will operate when cooled, as by setting on ice. The bar 35 may be set within the casing as in Fig. 5, in which ency is outward.

In Fig. 6 is shown a modified sensitive element made of one bent metal strip 38, around which is stretched a taut string or wire 39 of lower coefficient of expansion than the strip 38. This may be used as in Fig. 1, and will open when heated.

In Figs. 7 and 8 is shown a modification in which the sensitive strip 40 is set so as to be movable within a slot 41 in the egg. WV hen properly affected by changes in temperature, the tip of the member 40 will bend inward and push in the catch 42, whereby the lid is normally held down. The spring 43 will then open the egg.

Modifications may be made in the details herein shown and described without departing from the scope of my invention.

What I claim is 1. A self-opening box, in combination with a sensitive strip adapted to change its form whensubjected to a change in temperature, and locking means for the box operatively connected with said strip, whereby a change in form of said strip will unlock the box, substantially as described.

2. A self-opening box, in combination with a resilient strip adapted normally to hold the box closed .by its resilience, said strip being composed of parts having different coeificients of expansion so placed as to overcome said resilience when subjected to an appropriate temperature change, substantially as described.

3. A self-hatching Easter egg comprising two separable portions, means normally tending to separate said portions, means for holding said portions together, and a member sensitive to temperature changes adapted to move said locking means to permit said portions to separate, substantially as described.

case its resilient tend- 4. A self-hatching Easter egg comprising 3 two separable portions, a bow=shaped strip sensitive to temperature changes conformtemperature changes, substantially as de- 10 ing to the contour of one of'said portions scribed. and means on said strip adapted to engage In testimony whereof, I affix my signaand lock the other portion, substantially as ture, in presence of tWo Witnesses.

described.

6. A self-hatching Easter egg comprising HAROLD MACKAYE' two separable portions, a spring tending to Witnesses: separate them and a lock for holdingthem KATHARINE C. MEAD, together consisting of a strip sensitive to GnNn A. BEOKWITH.

Copiesot this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

